Kate, Duchess of Cambridge, right, smiles as she kneels next to her children Princess Charlotte, second right, and Prince George, who were flower boys and girls at the wedding of Pippa Middleton and James Matthews at St Mark's Church in Englefield, England Saturday, May 20, 2017. Middleton, the sister of Kate, Duchess of Cambridge married hedge fund manager James Matthews in a ceremony Saturday where her niece and nephew Prince George and Princess Charlotte was in the wedding party, along with sister Kate and princes Harry and William. (AP Photo/Kirsty Wigglesworth, Pool)